KOEO/KOER SELF-TEST [L3]


BME010200000T31

• The self-test function consists of the KOEO (Key On, Engine Off) self-test, performed when the ignition key is at ON, and the KOER (Key On, Engine Running) self-test, performed when idling. If a malfunction is detected as either self-test is executed, it is displayed on the WDS or equivalent. Using the self-test function, the present malfunction or a successful repair is readily confirmed. Refer to the self-test function table for the corresponding DTCs.
KOEO (Key ON, Engine Off) self-test
- The KOEO self-test is a powertrain control system self-diagnosis, performed when the ignition key is at ON and the engine is stopped. A KOEO self-test begins when the connected WDS or equivalent sends an execute command to the PCM.
- As the KOEO self-test is performed, the PCM performs inspection for the set DTCs and if a malfunction is detected the DTC is displayed on the WDS or equivalent.
KOER (Key ON, Engine Running) self-test
- The KOER self-test is a powertrain control system self-diagnosis, performed when the ignition key is at ON and the engine is idling. A KOER self-test begins when the connected WDS or equivalent sends an execute command to the PCM.
- As the KOER self-test is performed, the PCM performs inspection for the set DTCs and if a malfunction is detected the DTC is displayed on the WDS or equivalent.

KOEO/KOER self-test function table

×: Applicable
-: Not applicable

DTC No.

Condition

KOEO

KOER

P0031
Front HO2S heater circuit low input
×
×
P0032
Front HO2S heater circuit high input
×
×
P0037
Rear HO2S heater circuit low input
×
×
P0038
Rear HO2S heater circuit high input
×
×
P0101
MAF sensor inconsistent with TP sensor
-
-
P0102
MAF circuit low input
×
×
P0103
MAF circuit high input
×
×
P0107
MAP sensor circuit low input
×
×
P0108
MAP sensor circuit high input
×
×
P0111
IAT circuit performance problem
-
-
P0112
IAT circuit low input
×
×
P0113
IAT circuit high input
×
×
P0117
ECT circuit low input
×
×
P0118
ECT circuit high input
×
×
P0121
Throttle position stuck closed
-
-
P0122
TP circuit low input
×
×
P0123
TP circuit high input
×
×
P0125
Excessive time to enter closed loop fuel control
-
-
P0131
Front HO2S no inversion (low stuck)
×
×
P0132
Front HO2S no inversion (high stuck)
×
×
P0133
Front HO2S circuit malfunction
-
-
P0134
Front HO2S circuit no activity detected
-
×
P0138
Rear HO2S circuit high input
×
×
P0140
Rear HO2S circuit no activity detected
-
×
P0171
Fuel trim system too lean
-
×
P0172
Fuel trim system too rich
-
×
P0300
Random misfire detected
-
×
P0301
Cylinder No.1 misfire detected
-
×
P0302
Cylinder No.2 misfire detected
-
×
P0303
Cylinder No.3 misfire detected
-
×
P0304
Cylinder No.4 misfire detected
-
×
P0327
Knock sensor circuit low input
×
×
P0328
Knock sensor circuit high input
×
×
P0335
CKP sensor circuit malfunction
-
-
P0340
CMP sensor circuit malfunction
-
-
P0351
Ignition coil No.1/No.4 control circuit malfunction
-
×
P0352
Ignition coil No.2/No.3 control circuit malfunction
-
×
P0401
EGR flow insufficient detected
-
×
P0402
EGR flow excessive detected
-
×
P0403
EGR valve motor coils open or short
×
×
P0420
Catalyst system efficiency below threshold
-
-
P0443
Evaporative emission control system purge control valve circuit malfunction
×
×
P0480
Fan control module circuit malfunction
×
×
P0500
Vehicle speed sensor (VSS) circuit malfunction
-
-
P0505
Idle control system malfunction
-
×
P0506
Idle control system RPM lower than expected
-
-
P0507
Idle control system RPM higher than expected
-
-
P0511
IAC valve circuit malfunction
×
×
P0550
PSP switch circuit malfunction
-
-
P0661
VIS circuit low input
×
×
P0662
VIS circuit high input
×
×
P0703
Brake switch input malfunction
-
-
P0704
Clutch switch input malfunction
-
-
P0850
Neutral switch input malfunction
-
-
P1562
PCM +BB voltage low
×
×
P1602
Immobilizer unit-PCM communication error
×
-
P1603
Key ID numbers are not registered in PCM
×
-
P1604
Code word is not registered in PCM
×
-
P1621
Code word does not match after engine cranking
×
-
P1622
Key ID number does not match
×
-
P1623
Code word or key ID number read/write error in PCM
×
-
P1624
Immobilizer system communication counter=0
×
-
P2006
VTCS shutter valve stuck closed
-
×
P2009
Variable tumble control solenoid circuit low input
×
×
P2010
Variable tumble control solenoid circuit high input
×
×
P2228
BARO sensor circuit low input
×
×
P2229
BARO sensor circuit high input
×
×
P2502
Generator output voltage signal no electricity
-
×
P2503
Battery overcharge
-
×
P2504
Generator terminal B circuit open
-
×